Telegraphic type-writer.



E. BURLINGAME. TELEGRAPHIG TYPE WRITER.

APPLICATION FILED APR. 26, 1906. 92 ,5 1, Patented July 20, 1909.

3 SHEETS-SHEET 2.

WITNESSES, INVENTOR,

E. BURLINGAME.

TELEGRAPHIG TYPE WRITER.

APPLIOATION FILED APR.26, 1906.

3 SHEETS-SHEET 3.

Patented July 20, 1909.

FIGA

\ FIG 8 YINVENTOR,

Elfin-N 1 FIG. 7 WITNESsES,

\ tosend and receive these'waves.

confusion in this descriptiom'fl will refer to the mode of reception. 10'

and these impulses act upon, a selecting and so adjust it as to cause the operation of resents a character.

-a paratus as. constituting a efinit-e circuit.

term basiccircuits.

I let these twostates of action be represented to the one or more impulses over one or more N T D STAT S PATENT orrrcs. r

ELMER BURLINGAME, or L'APORTEQI'NDIANA, AssIGNoR TO THE BURLINGAME a TELEGRAPHING :TYPEWRITER COMPANY.

TELEGaAPHIc Hrs-WRITER.

State of Indiana, have invented a new and useful Telegraphic Type-W it My invention relates to the means of sending, the character of the .Theobject of the invention is to insure greater s eed and accuracy, than is at present possiiile, also to reducethe first cost, cost of maintenance, and'liability to disorder. I obtain these objects by means of the mechanism illustrated 'in the accompa ying draw: m s.

1n the Boudet and following similar sys terns, there are transmitted over a single Wire, for each character, a series of impulses, of substantially equal duration, five or more,v some positive, some negative. Each character is distinguished from all other characters by a particular permutation of the impulses mechanism at the receiving end of the line the printing mechanism'to print the desired character. 7

Whereas the Boudet systems send impulses at five or more different times, over one circuit, I send at one and the same time, impulses over five or more different circuits Each group of impulses, going atone and the same time over the five or more circuits, repcircuits, I will use ether waves of five or more different frequencies, with proper fer hereinafter to a particular wave frequency and its complementary sendln and receiving e several circuits thus formed, Iv hereby In the Boudet systems, a positive impulse represents one state of action, and a negatlve impulse represents another state of action;

one by the presence of an impulse over a basic circuit, and the other by the absence of such impu se over a basi'cacircuit. To avoid these impulses overthe basic circuits, sepa- Speciflcation o l Lettera Patent. Application and April 2651906. Serial No. 313,157.

impulses sent, and

For the five or more l i a 'aratus I s all re I to nsesix' basic circuits in rately, assimple impulses, and will also refer three'characterimpulses. The accompanying drawings, show.

Patented July 20, 1909.

basic circuits at one and the same time required to print a character, collectively, as a character impulse. Thus when five basic circuits are used," five character impulses Will consist eachof one simple impulse, ten

of two simple impulses, ten more of three 'five of four and one of five simple im ulses.

. The following table will show of w ch snnv ple impulses .each character impulse may consist. The letters at the t'opsof the columns refer to five basic circuits, respectively. ,0 represents tlie absence of a s mple 1mpulse, and 1 the presence of same A B C D E a= 1 *0 0 K 0; 0 b= 0 1 O O O vc= 1 1 0 0 0 'd.= 0 0 1 O 0- e= 1 0 1 O 0 f: 0 1' 1' O O- 1 1 1 0 0 0 0 0 1 O i'=' 1- 0 c 1 0 j= o 1 0 I 1 0 k= '1 1 0 1 0 l= 1 O 1 .1 O m= 1' O 1 1 0 n= 0 .1v 1 1 0 "o= 1' 1 1- 1 0 I 0 0 0 0 1 q= 1 0 0 0 -1 r= 0 1 0" 0 1 S: ,1 1 O O '1 t= 0 0 1 0 1 u='1.0 1 0 1 v= 0. 1 1 0 1 1 i' 1 .1 v (l '1 X= O 0 O" l- 1 1 1.0 O 1 1 o 1 0 1 1 S ace 1 1 0 1 1 'Clalrri'e' .0 0' 1 -1; 1, Capit. 1 "0' '1 1 K 1 PllIlCtlififiQDS; 0 I f 1 .1 1 Mechanical 1. 1 1 1 1 Thus .fk-C will consist of simple imp ses over basiccircui'ts A; 'B and D, and the ab-' same of same over 0 and E. The absence of an impulse is as essential to theformation of a character as the presence of the impulse.

To operate the linotype, it W111 be desirable order to get sixtyproduce seven character-impulses.

- if, in closing the contacts 68, 69 and "70, the" would print theletter b instead; as the, character impulse for the'letter"b consists how three basic circuits can be combined to It will not then be necessary to describe how five basic circuits can beso combined as to produce thirty-one, and six basic circuits can be combined so as to produce sixty-three character impulses.

In the accompanying drawings, similar figures of reference refer throughout the drawings to similar parts of the apparatus.

Figure 1 is a diagram of the circuits at the sending station, and shows how the proper basic circuits are closed to produce the de sired character impulse.

Fig. 2 is a diagram of the circuits at the receiving station, and shows how each simple impulse is converted into mechanical motion. Fig. 3 is a perspective view of the mechanical interpreter, Fig.

those intended according to the above code to operate with it to produce the desired character. If this were not provided for, the first simple impulse sent,would operate the receiving mechanism the same as though that Were the only simple impulse in that character impulse. table, the letter g consists of simple impulses over basic circuits A, B and C. Now

impulse should be sent on basic circuit B, before A and C, the receiving apparatus of a simple impulse over basic circuit B. I

avoid this, by placing the terminals of the basic circuits at the beginning of the arc of motion of the key lever 68 (Fig. 1);and the spring which is common to all the basic circuits, toward the last of the said are of motion; In this manner, thepredetermined basic circuits which are to operate in order ,to send the desired character impulse have their apparatus connectedin multiple, before the fina closing of their circuits, enceit is obvious that one basic circuit cannot operate before those intended to operate with it. The terminals of the basic circuits, 68, 69 and .70 will be bontact springs mounted in such relation to the keys of the-sending typewriter as to be moved into electrical contact by the operation of the key lever. In long distance wireless work, it"will be impcssible to operatemechanically from the key lever,

springs of such size to carry the current necessary tooperate the coils used. In this Thus, referring to the above case, the contacts under the key levers will operate relays whose secondary contacts are in the circuits of the coils. Thismeans of operation is not shown.

Figs. 3 to 8, show how the character 1mpulse selects the proper circuit to perform the mechanical motion desired by the sender. A, B and C will referto the three basic circuits, respectively.

In" Fig. 2' is shown the receiving apparatus for each basic circuit. It consists of a resonant circuit, 52, detector 57, a local'circuit, 54, 'a relay 53, secondary circuit 55, and the special apparatus shown in Figs. 3 to 8.

' Fig. 8 is What I'will; term the mechanical interpreter, and is what forms the base of this patent. Itconsists of sixessential arts; receiying magnets, 21, 22, and 23; siding bars; 8, 9 and 10; key armature magnet, 24; key armatures, '11 to 17; key contacts, 35; supporting frame, 1.

11 is an armature with an extension arm 41, and is so placed as to be operated by the magnet 24. There are, in a machine of the capacity herein described, seven of these armatures, 11 to 17, one for each character im ulse. When five basic circuits are used, there will be thirty-one armatures, and with six basic circuits, there will be sixty-three armatures. 8,9 and 1 0 are sliding bars, one for each basic circuit, and'are operated by the magnets 21, 22 and 23, respectively their armatures being pivoted at 25*, 26 and 27 and being provided with arms 18, 19, and 20 respectively, the ends of which engage notches in the under side of the bars as clearl shown in Fig. 2.. These bars, 8, .9 and 10, ave notches in their up ersurfaces, as shown in Fig. 8, so arranged t at for each character impulse, the bars 8, 9 and 10 will be in such position as to bring a notch in each bar under thearm 41 of the armature closing the circuit which prints the character desired. These bars may assume eight positions with relation to each other and to the armatures 11 to 17. One combination of positions, must of necessity, be the normal position of the "apparatus. This leaves,

then, seven combinations available for use.

to select character impulses, and, when these bars, 8,9 and 10 are in any one of these positions, other-than normal, they set in o eration the mechanism which prints t e character. All these, combinations of posiitions of the bars 8, 9 and 10 will be termed activeposition'sl A The arrangement of the notches in the bars 8, 9 and 10, is their selecting the desired character. In the Fig. 8, the bars, 8, 9 and 10 are shown one above the other, for the sake-of a clear comprehension. The lines. 39 and 40 indicateey to the solution-of the position that the arms 41 of the two key- 4 contact armature's, 17 and 13, will have with respect the b'arsS, 9 and 10. With the lot I their active positions to be moved to the right, the armature at could be depressed to the bottom of the notches, Whi e the armature at 39 would be arrested by the bar 8. In Figs. 6 and 7 is shown how a bar 8, by its notch, may select, by its two positions, between the armatures 15 and 16.

When the bars 8, 9 and 10 have assumed produce some particular character im ulse, the magnet 24 is to be .ener ized. T il before the ars have reached their active positions, for the pressure of the armatures 11 to 17 would interfere with the motion of the bars. In order to do this, I. place two contact springs in the path of motion of'the bars 8, 9 and 10 in such position that the bars by their motion, cause electrical contact between these two springs, 36 and 37.'

This contact is not com leted until. the bars have almost covered'tl ie distance throu h which they are to move. This prevents the armatures 11 to 17 interfering with the motion of the bars. These springs, 36 and 37 :are in the circuit of the magnet 24, hence, when this contact-is closed, the magnet 24 is energized. One of these springs 36, may mechanicall restore the bars 8, 9 and 10'to their norma positions after the magnets 21,

22 and 23 have ceased to be energized.

These bars may also be restored by any With the bars 8, 9' and "10 in active ositions, and the magnet 24 energized, a the armatures, 11 to 17 will be attracted downward, but only one, cthat having the notch in each of the bars ,8 9and 10 directly beneath it, can be depressed beyond the tops of the bars; the one armature is allowed to move, effects the closing at contact 35 of the circuit which includes magnet beneath the key of the receiving typewriter, corresponding to the key depressed by the sender.

The pressure of the armatures, 11 to 17 on the bars 8, 9 and 10 will prevent them from returning to normal nets 21, 22 and 23 have ceased to be energized, so the contact between springs 36 and 37' cannot be broken. Other means must other means.

then be provided to release magnet 24. I

accomplish this as follows :ln all typewriters, there is a bar or plate so placed asto ,b operated by the de ression of any key. This is connected wit the space mechanism. I place two contact springs, 46 and47, in such position with relation to thege space bar 45, b made by. the" that electrical contact will i 1 i I is must not be done nets 21, 22 and .23.

Thi 's'l extra distance position after the mag-.

operation of the space bar. These two springs close a circuit including the receiver battery and a relay 43. The secondary con- .tact between 57 and 58 of this relay is part of the circuit of magnet 24. Hence, immediately upon completion of the motion of the type bar, the circuit to magnet 24 is broken, and the armatures 11 to.17 released. The secondary contacts 57 and 59, of relay 43, together with the contact between the secondary contacts of relay 42, are in multiple with the contact between the springs 46 and 47 beneath the space bar. Now, with the secondary contacts pf relay 42 closed, relay 43 will keep its own coils energized, after it has been operated by the space bar. This is to prevent a repetition of the character on the typewriter, if the key is still held down by the sending operator. As long as the sending key is depressed, the magnets 21 22 or 23, whichever operate tor that character impulse, Will remain energized. The relay 42 is in series in the common return of the mag- Hence this relay 42, will be energized during the time the sending key is de ressed. Rela 43 is never energized till at tier relay 42 is, ence when it is once energized, it is released by the relay 42. This, then, affords a means of looking all receiving mechanism, after the printing of the character and until the release of the sending key. Should the sending key be released before thr completion of the recelving operations, the receiving operations will be completed, as the bars 8, 9 and 10 are locked in operated position by the pressure of the armatures 11 to 17, and will remain locked till the operation of relay 43. When relay 42 is released, allreceiving apparatus is in normal position.

Havin to the best of my ability described t e nature of this invention, and the best means of which I know of carrying the same into practical effect, what'I claim as new, and wish to secure by Letters Patent, is as follows;

1. In an apparatus of the class described,

in. combination, a plurality of sliding bars, a plurality of electro-magnetic devicesarranged in proximity to the bars and controlling the motion thereof, a plurality of movable elements arran ed inproximity to the bars and normally eld against movement thereby, electro-magnetic means for operating said movable elements, and means whereby the movement of one of said bars energizes said electro-magnetic means, substantially as described.

2. In an apparatus of the class described, in combination, a plurality of sliding bars, a Y

plurality ,of armatures, one fo'r'eachcharacter in proximity to, the bars and controlled as to its movement by the relative position of the bars, an electro-magnet for 'eachbar for controlling the movement thereof, electromagnetic meansfor operating the armat'ures,

and means whereby the movement of one or more of the bars energizes said electro -magneticmeans, substantially as described.

3. In combination, a plurality of sliding 5 bars, a plurality of armatures, one for each character in proximity to the bars and controlled as to its movement by the position of the bars, an electro-magnet cooperating with said armatures, means whereby said bars are ment of any of the armatures, means whereby upon the movement of any one of the 4 bars the said magnet is energized, and an electro-magnet. for each bar adapted when energized to move said bar, substantially as described. A

A. In combination, a plurality of sliding bars, having notched upper edges, a plurality V of armatures, one for each character, located over said slidin bars, and controlled as to movement by t e position of the bars, an electro-magnet for attracting said armatures, a spring bearin against the ends of the bars and tending to old them in neutral position, a contact cooperating with said spring on movement'of any one of the bars .to close a circuit through the magnet, an armature operatively connecting with each sliding bar, an electro-magnet for operating each armature, and means for energizingany one or more of said last named magnets, substan 'tially as described.

5. In combination, a lurality of sliding bars, a plurality of arma ures, in proximity to said bars and controlled as to their movement by the position of the bars, an electromagnet for o erating said armatures, a contact device a apted to be closed by the movement of any of said bars to energize said magnet, a plurality of electro-magnets, one for each sliding bar, means for energizing one or more of said electro-magnets'from a distance, means whereby the energizing .of said magnets moves the, corresponding sliding bar, a

j cuit including each of such last named elegtro-magnets, a source of electric energy, and a switch controlled by the movement of the respective armatures, substantially as described.

6. In combination, a plurality of sliding bars, a plurality of armatures, one for each character, located in proximity to said bars a relay whose secondary contacts form part of the circuit of said magnet and which flirnishes a means ofreleasing said magnet after the mechanical operation'required to print a character has been performed.

7. In combination, a plurality of sliding bars, a plurality of armatures, one for each character, located in proximity to said bars and controlled as to movement by thIEPOSI-z yieldingly held in position to prevent move-' plurality of character forming devices, anelectro-magnetfor each of sald dev1ces', a,c1r-

\ and controlled as to motion by the said bars,' a magnet for attracting said armatures, and

tion of the bars, a m'agnet for attracting said armatures, means operated by the sending station'for determining the position of the sliding bars, a relay whose secondary contacts form part of the circuit of said magnet, means whereby said relay is retained in its operated position-from the time the mechanical operation required to rint a character has been completed until t c release of the key ,de ressed by the sending operator, substantia ly as described.

8. In combination, 'a plurality of sliding bars, a plurality of armatures, 'one for each character, in proximity to said bars and controlled as to movement by the relative position of the bars, a magnet for attractin said armatures, and a relay with make and" reak. secondary contacts, said break'contact forming part of the circuit of said magnet and said magnet o erating to indirectly close the circuitwhic is a part of the relay circuit,- and means by which the said relay is maintained in its operated position, s ubstantially as de scribed.

9. In combination, a plurality ofsliding bars, a plurality of armatures, one for each characterf'locate'din proximity to said sliding bars and controlled as to movement by the relative position of the bars, a magnet for attracting said armatures, a relay whose secondary contacts form part of the circuit of said magnet, said relay being'provided with another secondary contact by which said relay is maintainedin operated position, and means by which said relay may be released when the key-depressed by the sending operator is released, substantially as described.

' 10. In combination, a plurality of sliding bars, magnets for operating said bars, aplurality of armatures, one for each character, and controlled as to its movement by the relative position of the bars, a magnet for attracting said armatures,- a first relay with break contact forming part of the circuit of K said armature-attracting magnet, said relay also having a break contact forming part of the circuit of said relay and by which it is maintained in operated position, and a second relay whose primary circuit is in series with said magnets for operating the sliding 115 bars and is operated and releasedsimultaneously therewith and whose secondary magnet contact is part of the circuit of said first relay and furnishes means to release said first relay, substantially as described.

11. In combination, a plurality of sliding bars at the receiving station, an armature bearing a number of springs, one for each character, whose operat on is determined by the relative position of the sliding, bars, a 12 tacty which it is maintained in operated 1 position, and means by which said relay may e released when the key depressed by the sending operator is released, substantially as described:

12. In combination, a plurality of sliding bars, a number of armatures, one for each character, whose operation is determined by the relative position of the sliding bars, a magnet controlling said armatures, a first relay with break contact forming part of the circuit of said armature controlling magnet, said relay also having a make contact forming part of the circuit of said relay, and

means by which it is maintained in operated position, a contact in circuit with and closed y the operation of mechanical motion desired at the receiving station, said contact being in multiple with the make contact of the said relay and furnishes the means whereby the said magnet controlling the said armatures may be released immediately after the com letion of the mechanical motion desired, su bstantially as described.

ELMER BURLINGAME. 

